The problem is that I am trying to create “grids” from the axis of the walls, and when I have a wall cut in two, at the same X coordinate for example, it ends up creating 2 “gridlines” one over the other, hence the attempt to list the coordinates except for repetitions.
I’ve tried it in various ways, with list get at index and others, but I didn’t get results, the closest I could get this was to list groups in equal X coordinates “but some equals end up going to another list”.
I hope someone can help me! Thank you in advance.

ok, but I have no idea how to do that, because it’s pretty much my second attempt with Dynamo
and what I have at the moment is a list with all the line coordinates, I think it would be more complex to do that than just filtering the coordinates that have the corresponding “x” and “y” coordinates, don’t you think? … I’m seeing if I can get any results with pythoncorrespondentes não acha?

This looks to be an issue with the floating point accuracy of the X-coordinates. For example, one number might be 15.00000000000 and one might be 15.000000000001. In the watch node, it only shows 3 decimal places, so this isn’t immediately apparent.

Even though this code has something wrong, I finished it all, I generated the lists for the x and y start and end points, but now it doesn’t generate lines on all walls anymore, it skips several, I don’t know what’s wrong … I tried to change rounding the coordinates multiplying, but it didn’t work either …Eixos_centros_paredes_v02.dyn (29.0 KB)
Maybe the way is wrong? I’m trying a new alternative using this topic Join walls in intersecting / touching, which starts selecting walls and identifying their python intersections, but then I get a list with true and false, and I couldn’t filter it to display only true … What do you think? Should I keep trying in the previous method or start selecting and filtering the intersecting walls would be the best way?